Cannot mount after reformatting. Any idea?
Doesn’t work with Disk Utility UI as well.
$ diskutil list
/dev/disk2 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk2
1: EFI EFI 209.7 MB disk2s1
2: Microsoft Basic Data 1000.0 GB disk2s2
$ diskutil eraseDisk ExFAT Sonia /dev/disk2
Started erase on disk2
Unmounting disk
Creating the partition map
Waiting for partitions to activate
Formatting disk2s2 as ExFAT with name Sonia
Volume name : Sonia
Partition offset : 411648 sectors (210763776 bytes)
Volume size : 1953044480 sectors (999958773760 bytes)
Bytes per sector : 512
Bytes per cluster: 131072
FAT offset : 2048 sectors (1048576 bytes)
# FAT sectors : 61440
Number of FATs : 1
Cluster offset : 63488 sectors (32505856 bytes)
# Clusters : 7628832
Volume Serial # : 5a9aa3d5
Bitmap start : 2
Bitmap file size : 953604
Upcase start : 10
Upcase file size : 5836
Root start : 11
Mounting disk
Could not mount disk2s2 after erase
Finished erase on disk2
$ diskutil info disk2s2
Device Identifier: disk2s2
Device Node: /dev/disk2s2
Whole: No
Part of Whole: disk2
Volume Name:
Mounted: No
Partition Type: Microsoft Basic Data
File System Personality: MS-DOS
Type (Bundle): msdos
Name (User Visible): MS-DOS (FAT)
OS Can Be Installed: No
Media Type: Generic
Protocol: USB
SMART Status: Not Supported
Disk / Partition UUID: 1865FAB7-B0E2-4CDA-A729-6CE489564498
Disk Size: 1000.0 GB (999958773760 Bytes) (exactly 1953044480 512-Byte-Units)
Device Block Size: 512 Bytes
Volume Total Space: 0 B (0 Bytes) (exactly 0 512-Byte-Units)
Volume Available Space: 0 B (0 Bytes) (exactly 0 512-Byte-Units)
Read-Only Media: No
Read-Only Volume: Not applicable (not mounted)
Device Location: External
Removable Media: Fixed
$ diskutil info disk2s1
Device Identifier: disk2s1
Device Node: /dev/disk2s1
Whole: No
Part of Whole: disk2
Volume Name: Not applicable (no file system)
Mounted: Not applicable (no file system)
File System: None
Partition Type: EFI
OS Can Be Installed: No
Media Type: Generic
Protocol: USB
SMART Status: Not Supported
Volume UUID: 0E239BC6-F960-3107-89CF-1C97F78BB46B
Disk / Partition UUID: E84022BF-05BB-4880-BCFA-E72F2E2C0541
Disk Size: 209.7 MB (209715200 Bytes) (exactly 409600 512-Byte-Units)
Device Block Size: 512 Bytes
Read-Only Media: No
Read-Only Volume: Not applicable (no file system)
Device Location: External
Removable Media: Fixed
